Heater for incubators.



PATENTED SEPT. 18, 1904.

G. R SMITH. HEATER FOR INGUBATORS.

APPLICATION FILED JUNE 28. 1902.

2 SHEETS-SHEET 1 NO MODEL.

W Mi I HIIHHHHIIHHHIIHlllHIHHIHIIIIIHIIIHIIIMIHIIIHIHHH|HHHIHIIIIHHHHHIHIII I .PATENTED SEPT. 13, 1904.-

G. B. SMITH.

HEATER FOR ING'UBATORS.

APPLICATION FILED 111111128; 1902-.

2 SHEETS-SHEET 2 NO MODEL.

slu'vanfoz Q/vikueaaen UNITED STATES Patented September 13, 1904.

PATENT EEicE.

HEATER FOR INCUBATORS.

SPECIFICATION forming part of Letters Patent No. 770,124, dated September 13, 1904.

Application filed June 28, 1902. fierial No. 113,612.' (No model.)

To all whom it may concern.-

Be it known that I, GEORGE RAYMOND SMITH, a citizen of the United States, residing at Latrobe, in the county of Westmoreland and State of Pennsylvania, have invented a new and useful Heater for Incubators, of which the following is a specification.

My invention is an improvement in means for heating incubators, and relates especially to the arrangement of the hot-water and air pipes within the incubator, whereby fresh air of the proper temperature is drawn into and circulated through the incubator.

My invention consists in the novel features of construction and combination of parts hereinafter described, particularly pointed out in the claim, and shown in the accompanying drawings, in which- Figure 1 is a vertical longitudinal section through an incubator, my heating apparatus being shown in side elevation. Fig. 2 is a plan view of the heating apparatus detached. Fig. 3 is a section on the line 3 3 of Fig. 7. Fig. 4: is a section on the line 4 4 of Fig. 7. Fig. 5 is a perspective view of my heating apparatus detached from the incubator. Fig. 6 is a plan view illustrating a slightlymodified arrangement of heating-pipes. Fig. 7 is a detail vertical section through the hot-water receptacle and a portion of the connectingpipes.

In the above-entitled drawings, Arepresents an incubator of any desired make or construction. Arranged at one end and exterior of the casing A is a cylindrical water receptacle or heater B. This heater has a centrally-arranged flue B and a filling-vent B through which water is introduced to fill the receptacle B. A lamp G is arranged below the receptacle, and the chimney C of the lamp extends upward into the flue B. A pipe D leads from the upper portion of the flue B and carries off the products of combustion and also carries heated air through the incubator, the said pipe extending entirely through the incubator and opening outwardly at the end of the casing A opposite the receptacle B. The upper end of the flue B is closed by a vertically-movable damper B (Removed in l The means for regulating and actuating this damper forms no part of the invention claimed Surherein and need not be described here. rounding the pipe D is a water-pipe E, eX- tending through one end of the incubator and nearly to the opposite end, and in practice I prefer to arrange the cylinder or water-heater at the end of the incubator in such a position that the water-pipe E will rest adjacent to the top of the incubator above the eg -tray. Branch pipes F and F lead from the waterpipe E at opposite ends of the same, said pipes being bent or coiled to cover as largea space as possible, and at their ends are connected to a return-pipe F which in turn connects to a pipe F", which extends parallel with the main water-pipe E and communicates with the lower portion of the water heater, as indicated at F*. By means of this construction the water heated within the cylinder B passes out through the pipe E and along through the branch pipes F and F completely heating the interior of the incubator, and after the said heated water has accomplished its purpose it is returned through the pipes F and F to the lower portion of the water-heater, and a constant circulation of the water is thus maintained. The heated water within the pipes will of course communicate this heat to the adjacent air within the incubator, and the heated air will of course ascend, and the cool air will descend. In order to introduce fresh air into the incubator and also to superficially heat the said air before permitting it to enter the interior of the incubator, I employ a flue G, which is connected to the heater or cylinder B and surrounds the return-pipe F said flue G entering the incubator directly beneath the main water-pipe E and extends beyond the return-pipe F, as most clearly shown in Fig. 7 and by means of this pipe arranged in this position I am onabled to draw fresh air into the incubator and partially heat it before it is discharged from said flue G, and as the fresh heated air rises to the top of the incubator the impure air will descend and will pass out throughthe fluepipes H, arranged at each corner of the incubator and depending to a point adjacent the Figs. 2 and 5 and shown in Figs. 1 and 7.) 1 bottom of the incubator.

In Fig. 6 I show a slightly-modified manner of arranging the pipes, and in which pipes F are omitted. The pipes F are arranged in six parallel branches, three on each side of the pipe E, the two outer branches being connected with the pipe E by cross-pipes F at their rear ends and F at their forward ends. The two pipes adjacent the outer pipes are connected at their forward ends to the pipes F and at their rear ends by short cross-pipes F to the innermost pipes, respectively,which latter are connected at their forward ends to the pipes F.

From the above it will be seen that I provide means for heating the air within an incubator and also for heating the fresh incoming air before it enters the incubator.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination with an incubator, a waterreceptacle having a central flue, a hot-air pipe leading from the flue and extending horizontally through the incubator, a hot-water-feed pipe leading from the receptacle and surrounding the hot-air pipe, said water-feed pipe being closed at its inner end and terminating within the incubator, branch pipes leading from the said feed-pipe from a point adjacent its closed end, branch pipes leading from the feed-pipe adjacent the end of the incubator nearest the water-receptacle, a return branch at right angles to the feed-pipe, the ends of all the branch pipes being connected to the return branch, a return-pipe arranged below the feed-pipe and opening into the lower part of the receptacle, the return branch pipe intersecting and opening into the said return-pipe, and a fresh-air flue semicylindrical in crosssection and carried by the water-receptacle and the feed-water pipe and inclosing the return-pipe.

GEORGE RAYMOND SMITH. Witnesses:

WILLIAM MAINN, W. B. SMITH. 

